Chemistry Coordination Compounds Class 12th Chemistry

Which one of the following metal complexes is most stable?

Option 1 - <p>[Co(en)₂(NH₃)₂]Cl₂</p>

Option 2 - <p>[Co(NH₃)₆]Cl₂<br><br></p>

Option 3 - <p>[Co(en)₃]Cl₂<br><br></p>

Option 4 - <p>[Co(en)(NH₃)₄]Cl₂</p>

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Alok Kumar Singh | Contributor-Level 10

7 months ago

Correct Option - 1

Detailed Solution:

Chelation increases stability of complex. Also more the chelation more the stability. Here, [Co (en)? (NH? )? ]Cl? , [Co (en)? ]Cl? and [Co (en) (NH? )? ]Cl? have chelation due to ethylenediamine. Therefore [Co (en)? ]Cl? has the highest chelation so the highest stability.

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